Aaaaand Groupon’s plunge continues: “Groupon Inc.’s stock fell below its initial public offering price for the first time Wednesday as investors reassess the challenges facing the still-unprofitable online deals company in a shaky economy … The rapid fall from Wall Street’s graces occurred almost entirely this week. Groupon has shed one-third of its market value since Friday’s close to wipe out nearly $6 billion in shareholder wealth.” [AP]